ROBINS AIR FROCE BASE, Ga. – Matthew Osborn, 402nd Aircraft Maintenance Support Group Aerospace Ground Equipment Flight power support mechanic, inspects a TTU-228 portable hydraulic test stand at Robins Air Force Base, Georgia, Aug. 19, 2021. The hydraulic test stand, which holds 32 gallons of hydraulic fluid, is used to test aircraft landing gear. (U.S. Air Force photo by Joseph Mather)